Right here, Right NOW!

You don't say a word, probably because you couldn't think of anything to say that wouldn't mess up the moment. You simply just place your hands on her shoulders, easing her down to her knees in front of you. Her eyes stay locked on yours, as a hand grips your cock and gently stroking. She continues to stare deep into your eyes as her lips part and begin sinking your cock into them. She pulls completely off you for a moment, still staring, gives you a wink, and then deepthroats your cock to the balls, bouncing her head hard up and down the entire length of your shaft.

You close your eyes, soaking the pleasure in completely. You are so caught in the moment that you don't hear or see the girl that is walking up the stairs. It's a slightly chubby redheaded girl, wearing a cheerleading uniform, exposing her stomach. A short little red skirt covers up her waist line, but there is very little fabric there at all. She sees the two of you and doesn't make a sound, she just stops short, stares wide eyed at what is going on in front of her.

Your step-mother rises to her feat, and leans on the hand rail beside you, pushing her ass out towards you, begging you to fuck her as she shakes it back and forth. The cheerleader takes a few steps back down the stairs, trying to stay out of sight, but still watching closely.

You enter your step-mother's pussy, ramming deep and hard, as she moans loudly with every single thrust. You fuck her in rythm with her moans, the cheerleader voyer now has begun fingering herself, her skirt pulled up slightly revealing her lack of panties, two fingers buried deep in her snatch.

You continue to pump into your step-mother, feeling an iminent orgasm coming on. Just then, as your step-mother's moans have turned to screams, the cheerleader drops her backpack to the ground, focusing on her masterbation instead of holding her pack. The load thud it creates stops you and your step-mother dead in your tracks. The three of you stare at each other.

"God I'm so sorry." The cheerleader lets out. She reaches for her bag and starts to decend the stairs.

"No wait honey, you want to join us?" Your step mother says to your surprise.
"Come on, he's amazing, you should try it." She continues.

What does the cheerleader decided to do?